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Oil exploitation method based on nano motor and application of nano motor

A technology of oil extraction and motor, which is applied in the field of nano motor application, can solve the problem of difficult oil extraction, and achieve the effect of improving recovery rate and simple preparation method

Inactive Publication Date: 2019-07-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a nanomotor-based oil extraction method and the application of nanomotors, which can solve the problem that oil trapped in blind ends, pores or cracks of rock formations is difficult to extract; the oil extraction method of the present invention can effectively improve oil recovery factor

Method used

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  • Oil exploitation method based on nano motor and application of nano motor
  • Oil exploitation method based on nano motor and application of nano motor
  • Oil exploitation method based on nano motor and application of nano motor

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specific Embodiment approach 1

[0026] Such as figure 1 Shown, a kind of oil extraction method based on nanomotor, described oil extraction method based on nanomotor comprises:

[0027] Step 1: Take a nanomotor made of a sphere 1 with half a spherical surface vapor-deposited with a catalytic metal layer 2 and the other half spherical surface modified with a hydrophobic and lipophilic group 3, mix the nanomotor with deionized water to obtain a nanomotor motor suspension;

[0028] Step 2: Mix the hydrogen peroxide solution with the nanomotor suspension and inject it into the formation of the oil well;

[0029] Step 3: The catalytic metal layer 2 evaporated on the surface of the nanomotor catalyzes the decomposition of hydrogen peroxide, and generates an oxygen concentration gradient to make the nanomotor move;

[0030] Step 4: When the nanomotor moves in the formation, the hydrophobic and lipophilic group 3 modified on the surface of the nanomotor combines with the oil droplet, and the nanomotor with the oil...

specific Embodiment approach 2

[0033] The hydrogen peroxide solution is a hydrogen peroxide solution with a volume fraction of 5%-30%.

specific Embodiment approach 3

[0035] Such as figure 1 As shown, the diameter of the sphere 1 is 500nm-40μm.

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Abstract

The invention relates to the technical field of petroleum exploitation, in particular to an oil exploitation method based on a nano motor and application of the nano motor. The oil exploitation methodbased on the nano motor comprises the steps that step 1, the nano motor is taken, and the nano motor is mixed with deionized water to prepare nano motor suspension; step 2, a hydrogen peroxide solution is taken and mixed with the nano motor suspension and then injected into the stratum of an oil well; step 3, a catalytic metal layer evaporated on the surface of the nano motor catalyzes hydrogen peroxide to be decomposed to generate an oxygen concentration gradient to enable the nano motor to move; step 4, when the nano motor moves in the stratum, hydrophobic oleophilic groups modified on thesurface of the nano motor are combined with oil drops, and the nano motor with the oil drops moves in stratum liquid; and step 5, the nano motor with the oil drops is extracted from the oil well, andthen centrifugal separation is carried out to separate the oil drops from the nano motor and the oil drops are extracted. The oil exploitation method can effectively improve the recovery ratio of an oil field.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a nanomotor-based petroleum exploitation method and the application of the nanomotor. Background technique [0002] Most of my country's oil resources are distributed in continental oil fields, and the permeability of oil and gas wells in oil fields is low, making oil exploitation relatively difficult. Oil and gas reservoirs are widely distributed geographically, and the distribution of the above oil and gas reservoirs has resulted in the difficulty and high cost of oil extraction in my country. Traditional oilfield development can be divided into three stages: primary oil recovery, secondary oil recovery and tertiary oil recovery according to the law of technological progress. During primary oil recovery, oil is usually produced spontaneously under formation pressure, or pumped out using conventional pumps. When the formation pressure is insufficient, the format...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/38E21B43/00
CPCE21B43/121E21B43/38
Inventor 周德开刘合李豫龙金旭李隆球
Owner HARBIN INST OF TECH
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